import java.io.File; import java.io.RandomAccessFile; public class CounterCgi { public static void main( String[] args ) { int count = -1; try { File file = new File("counter"); boolean flag = file.exists() ; RandomAccessFile fw = new RandomAccessFile( file, "rws" ); // handle an initially empty file if ( flag ) { fw.seek( 0 ); count = fw.readInt(); } else { count = 0; } fw.seek( 0 ); fw.writeInt( count+1 ); fw.close(); } catch( Exception ex ) { // ignore exception, use count -1 to indicate error } System.out.print("Content-Type: text/html\r\n\r\n"); System.out.println("" ); System.out.println("" ); System.out.println("

" ); if ( count < 0 ) { System.out.println( "Error in accessing count file" ); } else { System.out.printf( "Count is %07d", count ); } System.out.println("

" ); System.out.println("" ); System.out.println("" ); } }